The jambs contain five shafts on each side, which differ from that in the centre, in that they are of Purbeck marble, and banded, in pleasing contrast to the plain stone of their own bases and capitals, and of the (unbanded) central shaft.

She pointed to a 14-year study she did that showed that male Magellenic penguins with two bands survived the same as unbanded penguins, but that study did show that double-banded females had a lower survival rate.